Nike Air Max 2011 running shoe delivers maximum cushioning along with innovative design elements to provide the ultimate in performance and style. Innovative Fuse technology and a notched inner sleeve deliver lightweight, flexible support and seamless comfort. A molded collar helps reduce heel slip. Cushlon foam midsole with a full-length Max Air™ unit adds plush, durable cushioning for the ultimate ride. Flex grooves encourage a smooth transition. BRS 1000™ carbon rubber under the heel. Solid rubber with strategically placed lugs covers the rest of the outsole to give durable traction. Wt. 13.8 oz. .